Joshua 5:11
And on the day after the Passover, they had for their food the produce of the land, unleavened cakes and dry grain on the same day.
Leviticus 23:14
And you may take no bread or dry grain or new grain for food till the very day on which you have given the offering for your God: this is a rule for ever through all your generations wherever you are living
Exodus 12:18-20
In the first month, from the evening of the fourteenth day, let your food be unleavened bread till the evening of the twenty-first day of the month.
Exodus 13:6-7
For seven days let your food be unleavened cakes; and on the seventh day there is to be a feast to the Lord.
Leviticus 23:6
And on the fifteenth day of the same month is the feast of unleavened bread; for seven days let your food be unleavened bread.